Home / 21,554.25-29,748.51-12,478.29

Finding the Fourth Proportional to 21,554.25, 29,748.51 and 12,478.29

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Solution

The fourth proportional to 21,554.25, 29,748.51 and 12,478.29 is: 17,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.25 : 29,748.51 = 12,478.29 : x
  2. Step 2: Convert to fraction form
    21,554.25/29,748.51 = 12,478.29/x
  3. Step 3: Cross multiply
    21,554.25x = 29,748.51 × 12,478.29
  4. Step 4: Simplify right side
    21,554.25x = 371,210,534.85
  5. Step 5: Solve for x
    x = 371,210,534.85/21,554.25
  6. Step 6: Final answer
    x = 17,222.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.